* {
  margin: 0;
  padding: 0;
}
input{
  outline: none;
}
/* 头部内容样式 */
.header {
  width: 1200px;
  height: 60px;
  margin: 0 auto;
  position: relative;
  display: flex;
  margin-bottom: 20px;
  justify-content: center;
  align-items: center;
  font-weight: 500;
  background-color: orange;
  color:white;
  font-size: 30px;
}
.header>p>a{
  text-decoration: none;
  display: block;
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  right:20px;
  color:white;
  font-size: 20px !important;
}
.header >.top_title{
  position: absolute;
  display: block;
  left:20px;
  font-size: 30px;
  color:white;
}
.header>.adminNickname{
  position: absolute;
  color:white;
  right:140px;
  font-size: 18px;
}
.header>.adminNickname>span{
  color:white;
  font-size: 20px;
}

.header >.adminNickname >.logout{
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  color:orange;
  width: 100px;
  height: 30px;
  margin-left: 20px;
  border-style: none;
  font-size: 18px;
  border-radius: 4px;
  background-color: white;
}
.header >.adminNickname >.logout:hover{
  color:white;
  background-color: orange;
}
